hv/netvsc: fix handling of fallback to single queue mode

[ Upstream commit 916c5e1413be058d1c1f6e502db350df890730ce ]

The netvsc device may need to fallback to running in single queue
mode if host side only wants to support single queue.

Recent change for handling mtu broke this in setup logic.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 3ffe64f1a641 ("hv_netvsc: split sub-channel setup into async and sync")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index cb03a6ea076a66c7ca856e912ed42a97741e05da..328c37e9096d17543ef9f45255d8c7c6713e6f72 100644 (file)
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -1299,6 +1299,7 @@ out:
        /* setting up multiple channels failed */
        net_device->max_chn = 1;
        net_device->num_chn = 1;
+       return 0;
 
 err_dev_remv:
        rndis_filter_device_remove(dev, net_device);